Service Manual 27

Checking the drainage and forming the pipings

Checking the drainage and forming the pipings

Checking the Drainage

To check the drainage.

1. Pour a glass of water on the evaporator.
2. Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the
drain exit.

Drain piping

1. The drain hose should point downward for easy drain
flow.
2. Do not make drain piping like the following.
Downward slope
Do not raise Accumulated
drain water Tip of drain hose
dipped in water
Air
Waving
Water
leakage Water
leakage Ditch
Less than
50mm gap
Water
leakage
(mm2)